Improvement in rotary steam-valves



@anni @twine H. LOMBARD, OF SAN FRANCISCO, CALIFORNIA.

Letters Patent N 96,601, dated November 9, 1869.

IMPROVEMENT IN ROTARY STEAM-TITALVES.

The Schedule referred to in these Letters PatentV and making part of thosame.

To all whom it may concern Be it known that I', H. LoMnAnmof SanFrancisco, in the county ,ot' San Francisco, and State of California,have iuventeda new and improved Steam Cnt-Cif; and I do herebfy declarethat the following is a full, clear, and exact description thereof,which will enable others skilled in the art to makesand use the same,reference being,- had to the accompanying drawing, formingl part ot'this sl'ieciiention.'

Ihe object ot' this invention is to provide new and useful improvementsin steam-valves, whereby the Supply ot' steam may be varied by theact-ion of the governor, as the motion ot' the engine varies. It is alsodesigned to provide a regulating-valve, capable 0i' supplying andregulating the steam -for one or more engines. l

'lhe'inventiou consists of a hollow conical or tapered valve, receiving`the steam at one end, and delivering it at one side, to ports in acircular tapered seat, leading to the cylinder, and exhausting, throughthe other side,'i`rom the same ports, and at the end opposite thereceiving-end, which valve. is provided with a central auxiliary' valve,connected to the governor, and operating to vary the opening' of thelivesteam passage; also, to sepzu'atevthe space ofthe said valvelongitudinally, to form the live-steam and exf haust passages, ashereinafter more i'ully specilied.

Figure 1 represents a sectional elevation of my improved valve-device,and

Figure 2 represents a horizontal ysection of the same.

Similar letters of Arefereilice indicate corresponding parts.

A represents a hollow tapered valve, wor-kinr in a tapered seat, B,which may have six, more o'r less, plane sides, and a port in each',each set of opposite port-s connecting with one cylinder.

The said valve A is to be connected, at C, with the live-steam pipe, andat D with the exhaust. It is provided with a live-steam port, E, ou oneside, and

an exhaust-port opens to the wide exhaust-ooit F ot" the said valve A.

At one side of the port L, and on the exterior wail of the valve G, asegmental block, M, fitting snugly between the surface of the said valveG and the seat B, is bolted to thesaid v: lve G.

lhe vale A makes one complete revolution to each double stroke of theengine, alternately opening' all the ports in the-seat B to thelive-steam and exhaust ports. W

The valve G is connected to the governor, by which it is so moved, asthe speed varies, that the block M will increaseor diminish the breadthof the passage E, and thereby the amountof steam admitted to the portsofthe seat B, which will be more or less, accordine` to the timerequired for the port E to pass the said ports of the seat Band thistime will be varied by the breadth ot' the said port E, as well-as bythe speed of the engine.

Having thus described my invention,

I claim as new, and desire to secure by Letters Patentv 'Ihe combinationof the seat B, valve A, and auxiliary valve G, when provided with portsand passages, and ar 'anged for operation, substantially as specitied. y

The above specification of -my invention signed by me., this 17th dayot' June, 1869.

' i' H. LOMBARD.

Witnesses: l

B. A. LOMBARD, H. C, SHORT.

